Maize Inbred PH42N1 Breeding Acceleration via Segmentation
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, taking six to twelve years, and existing technologies face challenges in creating stable, high-yielding varieties with desirable traits such as disease resistance, drought tolerance, and improved agronomic characteristics.
Innovation Solution
A novel maize variety, PH42N1, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and drought tolerance, achieved through backcross conversion, genetic manipulation, and transformation, allowing for the creation of hybrid seeds with enhanced agronomic properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then the variety can be created with desired traits, but the process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by pre-establishing inbred lines with stable genetic compositions and desired traits before the actual hybrid development. The inbred lines are developed and validated in advance, so when hybrid production is needed, the breeding process can proceed much faster since the parental lines are already prepared and characterized.
Solution Approach 2:
The patent uses copying by creating multiple inbred lines that replicate successful genetic combinations and traits. Instead of developing each variety from scratch, the patent copies and recombines proven genetic elements across different inbred lines, accelerating the development of new varieties while maintaining stability.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then the variety becomes more versatile and productive, but the breeding complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding program into separate, manageable inbred lines, each carrying specific desirable traits. Instead of trying to combine all traits in a single complex breeding program, the patent segments traits across different inbred lines (e.g., one line for disease resistance, another for yield), then combines them systematically in hybrid production.
Solution Approach 2:
The patent uses universality by creating inbred lines that can serve multiple purposes across different breeding programs. The inbred lines are designed to be universally applicable as parental lines for hybrid production, allowing the same inbred line to contribute to multiple different hybrid varieties with different trait combinations.
3Stability of the object's composition
If inbred lines are developed through multiple generations of selfing, then genetic uniformity is achieved, but the process is time-consuming
Solution Approach 1:
The patent applies continuity of useful action by maintaining continuous selection and selfing processes across multiple generations to achieve genetic uniformity. The inbred lines undergo continuous self-pollination and selection for desired traits, ensuring that genetic uniformity is maintained and improved over time without interruption.
Solution Approach 2:
The patent uses feedback by continuously monitoring and selecting for desired traits during the inbreeding process. Genetic uniformity is achieved through feedback-based selection, where plants are evaluated for trait expression and genetic composition, and only those meeting the criteria proceed to the next generation, ensuring rapid achievement of uniformity.
Data Source
AI summary
A novel maize variety designated PH42N1 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH42N1 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH42N1 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety PH42N1 or a locus conversion of PH42N1 with another maize variety.